A passkey is a smarter, harder-to-steal replacement for a password. Instead of you creating and remembering a code, your device generates a secure cryptographic key pair. One part lives on your device, the other sits with the service you’re logging into. To verify it’s really you, it uses something you already do every day - scanning your fingerprint, your face, or entering a PIN.
Key difference: With a password, a shared secret is exchanged, and that secret can be intercepted or guessed. With a passkey, no secret is ever shared. That makes phishing attacks, credential stuffing and brute force hacks far less effective.
Platforms like Apple, Google, and the UK Government’s own digital services already support passkeys. The technology now works across all major operating systems and browsers, meaning adoption is no longer the barrier it once was.
Rising data breaches, reused passwords, and phishing attacks are among the top causes of business cyber incidents. The NCSC’s guidance is for both individuals and businesses, it’s a signal that the security landscape is shifting, and businesses that don’t move with it face increasing risk.
That said, passkeys aren’t a silver bullet. Not every platform supports them yet, and there are practical considerations, such as what happens if an employee loses their device. A well-thought-out rollout, combined with the right policies, is essential.
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